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US Patent: 489,455
Pipe Wrench
Patentees:
George W. Bufford - Ithaca, NY
John E. Kitson - Ithaca, NY

USPTO Classifications:
81/104, 81/178, 81/185.2

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
D. H. Hayward
C. L. Sundgren
G. W. Slocum
H. P. Johnson

Patent Dates:
Applied: Apr. 21, 1892
Granted: Jan. 10, 1893

Patent Pictures:
George W. Bufford and John E. Kitson patent January 10, 1893
USPTO pdf tiff
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Description:
A spring on the shank of the handle positions the movable jaw, and keeps the adjusting nut bearing against the rocking thrust ring.

The stationary jaw surface can be removed and reversed to address wear.

A related design, with this design as an "alternate form" was registered Jan. 10, 1893 in Britain as patent GB-189300556.

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